Due to the sheer length of Odyssee, I started play of Valhalla only recently (today, 10th of October 2021).

• First install, new disk without scratches or dirt, drive makes spin-up/search/startup-sounds during installation.
• Download succeeds, gameplay available until little Eivor is dancing, then error: Cannot continue application, Please make sure disc isn't damaged or dirty.

I fully clean the PS4, including the disc drive lense. Delete both Odyssee and Valhalla, then reinstall Odyssee. I'm perfectly able to play Odyssee, so the PS4 and it's drive are in tip top shape.

Then I again install Valhalla.

• Same spin-up/search/startup sounds from the drive during installation.
• Download succeeds, again gameplay available until little Eivor is dancing, then error: CE-30005-8

PS4 Pro firmware is up to date
Rebuild of database did not help the problem.

After all of the above, there are no scratches or dirt on the disc. I'm quite disappointed to say the least.
Advice to resolve this matter would be greatly appreciated.